McMaster-Carr logo
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    14 Products

    USS Washers

    These washers meet USS sizing specifications and typically have larger diameters than SAE washers. As a result, they accommodate larger screws and nuts and distribute pressure across a wider surface area. They are also thicker, so they withstand heavier loads and span wider gaps when used as spacers.
    Steel
    Image of Product. Front orientation. Washers. USS Washers.
    Black Super-Corrosion-Resistant-Coated Steel—Combines a finished appearance with the rust resistance of 316 stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    For Fastener Strength Grade/Class—If you require screws or nuts with a specific fastener strength rating, make sure your washer matches the grade or class.
    For Screw
    Size
    ID
    OD
    Thk.
    For Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Black Super-Corrosion-Resistant-Coated Steel
    1/4"
    0.312"0.750"0.051" to 0.080"SAE Grade 8
    10000000000000000
    5/16"
    0.375"0.875"0.064" to 0.104"SAE Grade 8
    ASME B18.21.11000000000000000
    3/8"
    0.438"1.000"0.064" to 0.104"SAE Grade 8
    ASME B18.21.150000000000000
    7/16"
    0.500"1.250"0.064" to 0.104"SAE Grade 8
    ASME B18.21.1500000000000000
    1/2"
    0.562"1.375"0.086" to 0.132"SAE Grade 8
    ASME B18.21.1500000000000000
    9/16"
    0.625"1.500"0.086" to 0.132"SAE Grade 8
    500000000000000
    5/8"
    0.688"1.750"0.108" to 0.160"SAE Grade 8
    ASME B18.21.110000000000000
    3/4"
    0.812"2.000"0.122" to 0.177"SAE Grade 8
    ASME B18.21.110000000000000
    7/8"
    0.938"2.250"0.136" to 0.192"SAE Grade 8
    ASME B18.21.110000000000000
    1"
    1.062"2.500"0.136" to 0.192"SAE Grade 8
    ASME B18.21.110000000000000
    1 1/8"
    1.250"2.750"0.136" to 0.192"SAE Grade 8
    ASME B18.21.1100000000000000
    1 1/4"
    1.375"3.000"0.136" to 0.192"SAE Grade 8
    ASME B18.21.1100000000000000
    1 3/8"
    1.500"3.250"0.153" to 0.213"SAE Grade 8
    100000000000000
    1 1/2"
    1.625"3.500"0.153" to 0.213"SAE Grade 8
    100000000000000
     
    back to top